[Bug target/59343] miscompiled for loop in sh4 target (-Os)

[olegendo at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59343

--- Comment #8 from Oleg Endo <olegendo at gcc dot gnu.org> ---
(In reply to gcc-bugzilla-f5d8 from comment #0)
> Created attachment 31327 [details]
> miscompilation testcase
> 
> The attached testcase miscompiles on sh4 target if build with -Os
> 

BTW thanks for the test case.  It's an interesting case for further
optimizations of the sh_treg_combine pass (see PR 51244 comment 72).